Ark-0
Ark-0 is a test network for trying things out. It may be reset at any time.

Block 19027

Hash
000000b7c9cb2865c779fdcd2138aeda08060c6915aab6ef7cc33e63af111ef8
Confirmations
22588
Time
2026-10-10 01:25:06 UTC
Median time
2026-10-10 01:17:05 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
ddbbb522236a1ed54e7d208c7bdc673f4e44a7e463cb860a557c6e4d3e6a48dc
Previous block
0000005d7743a3ac7281243026b5188b31a8255fcfc6ad27cb50f5ffd100407f
Next block
000000f14bf6d394a81b6197d5927152d455ae421947200dd360c15e45fb5e36

ML-DSA-44 block signature (M2)

M2 is an experimental rule of this test network. From a height set in its build, a node that enforces M2 accepts a block only if, besides the classical signet signature, the block carries a valid ML-DSA-44 signature by the Ark-0 block key, in its coinbase's witness commitment output. This page shows that signature; it does not check it.

Block 19027 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
5b8b609c845b2b1334a0f751223bde11… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ddbbb522236a…6e4d3e6a48dc coinbase1250